Telephone appliance.



w. DALTON. MANUFACTURE 0F BLNDED POWDER COMPOUNDS.

APPLICATION FILED JULY I8. |916. 1,204.1 37. Patented Nov. 7,1916.

2 SHEETS-SHEET l.

umass.' l

*To all 'whore it may concern:

FFQE.

Be it known that I, JOHN L. CnEvmNc, a

citizen of the United states, residing in the city, county,'and State of New York, have -invented acertain new and useful Improve- Specification of Lettera Patent.

' Application med July 27, 1908. Serial No. 445,594.

ment in Telephone Appliances, of which the following is a specication, reference being had to the drawmg forming a part thereof.

My invention pertains to that class of devices intended to be used in connection with the receiver ofy an ordinary telephone and has for its particular object to provide mea-ns for rendering impulses emitted by an ordinary telephone recelver audible in both ears instead of one only, as is usual, and also to cut out outside noises which ordinarily tend to confuse a person having a single receiver to one ear and the other ear open to outside impulses).

It is a further object of my invention to provide an inexpensive device which may fulfil the above functions and be readily applied to the ordinary receivers now in use without defacing the same and also to provide a device which may be permanently attached'to the receiver or attached at such times as desired with as little inconvenience as possible.

Figure 1 is a side elevation and partial section of an ordinary Bell telephone receiver together with one form of device embodying my invention applied thereto, shown partially in section. Fig. 2 is a front elevation of one means for attaching my device to the' ordinary receiver. Fig. 3 is a side elevation of the attaching means shown in Fig. 2. t j

.In Fig. 1 (1) represents the body portion of the ordinary Bell telephone receiver provided with the threaded portion (2), diaphragm (3) and ear piece '(4) having an annular Hange (5) serving to clamp the diaphragm inplace and define the cavitv (6) with which communication is established by the aperture (7). 8) represents an ear piece which may be identical with the ear piece (4.) with exception of the opening or cavity (9) which communicates with the nipple (10) to which is attached the sound tube (11) terminating in which-is attached to the ear piece (13) so as tolcommunicate with the interior of the cavity (14) thereof. The ear piece (8) is shown as held in place against the receiver (1) as bv means of clips (16) carried by a spring ring as indicated in section by (17).

the nipple (12)' Patented Nov. 7, 1916.

1n Figs. 2 and 3 (16) represents the clips as shown in Fig. 1 carried by the spring ring (17) which may be opened and sprung upon the ear piece (8) ifdesired.

The practical operation of my improved telephone appliance is substantially as follows; reference being/had particularly to Fig. 1. If desired, the telephone receiver (1) may be used lin the regular way without the use of my appliance until such times as it may be desirable to cut out outside noises and render the sound emitted by the receiver more easily audible. At such times the ear piece (8) may be placed against the ear piece (4) ofV the receiver and held firmly against one ear ofthe listener and the ear piece (13) held against the other ear.

Then the sound impulses emitted by the receiver will be transmitted tothe operator through the aperture (7) and through cavity (9) tube (11) to cavity (14) causing an eect on each ear in such .manner as to make the vibrations of the diaphragm (3) that it will stay attached thereto and at alltimes be readily and quickly removable the spring device as shown in the iigures may be used in the following manner. The spring .ring (17) may be opened and sprung over the ear piece (8) in such manner as to firmly grip the same. Then if the ear piece (8) be pressed against the receiver (1) the clips (16) will spring over the edge of the ear piece (4) and hold the ear piece (8) in place as shown in Fig. 1 and thus the appliance will remain attached to the receiver until purposely separated as desired.

It will be noted that when the ear piece (8) is held upon the ear piece'(4) by the clips (16) the same may be rotated about the ear piece (4) with little diiiiculty; therefore, if in picking up the instrument and placing the ear piece (8) to the ear, the tube (11) should happen to come in an undesirable position, as for example between the face of the user and the telephone transy vention and from which great -variation may be made and still be within the scope lof said invention.

Having thus described my invention, what I desire to protect by Letters Patent is as4 set forth .in the following claims, to witzl. An attachment for a telephone receiver earpiece adapted to operatively engage the same, comprehending an attachment ear piece having a spring ring encircling and gripping the same provided with members adapted to engage the telephonereceiver ear piece tok detachably hold the attachment ear. piece in operative relation to, said receiver ear piece. Y v

2. An attachment for telephone receivers comprising an ear piece, a spring ring encircling and gripping said ear piece, said ring being provided with members for yoperatively engaging a telephone receiver to hold said attachment ear piece in operative relation thereto.

3. The combination with a telephonel receiver having an ear piece, of ali attachment ear piece provided with engaging means whereby it is retained in operative relation with said receiver ear piece, said engaging means comprehending a springl ring encircling and gripping said attachment ear piece and having projecting members for engaging the telephone receiver earpiece to hold .said ear pieces in operative relation with each other.

4. An attachment for a telephonereceiver ear piece adapted to operatively engage the same, comprehending an attachment ear piece having a spring ring encircling and gripping the same, said ring being provided with members engaging said attachment ear piece to prevent lateral movement thereon, and also provided with members adapted to engage the telephone receiver ear piece to i i i detachably hold. the attachment ear I' piece inoperative relation to said receiver ear piece.

5. An attachmentfqr telephonereceivers comprising an-ear piece, a spring ring encircling and gripping said ear piece, said ring being provided with members for preventing lateral movemen of said ear piece within said ring, and als provided with membersfor operatively engaging a-telephone receiver to hold' said attachment par ative relation thereto.

6. The combination with a telephone receiver having an ear piece, of an attachment ear. piece provided with y engaging means whereby it is retained in operative relation with said? receiver ear piece, said engaging means comprehending a spring ring encircling said attachment ear piece and having piece in oper.-

inwardly-turned members on opposite sidesv thereof engaging said ear piece and also having projectingmembers for engaging the telephone receiver ea-r piece to hold said ear pieces in operative relation with each'` other.

7 The combination with-a telephone receiver having an ear piece provided with a sound transmitting aperture, of an attachment ear piece adapted when placed between the receiver ear piece and the earv of. a user to transmitl sound' Waves from sald aperture to sa1d ear, and having a second ear plece, means for carrying sound waves from the receiver thereto, and means Y for holding the attachment ear piece in operative relation to the receiver ear piece comprehending a member encircling the attachment ear piece and tending to grip the same, said member being provided with inwardly extending members engaging said attachment ear piece to prevent lateral movement with respect to said encircling member and means carried by said encircling member for engaging the receiver ear piece and holding the said ear piece and the attachment call; piece in operative relation with each ot er.

. JOHN L. CREVELING.

Witnesses:

R. H. MORGAN, Jr., C. J. STOCKLEY. 

